The ratio of male to female students is the amount of male students devided by the amount of female students.

\(\displaystyle\frac{{90}}{{110}}=\frac{{9}}{{11}}\)

\(\displaystyle\frac{{90}}{{110}}=\frac{{9}}{{11}}\)

Question

asked 2021-06-18

Who is more likely to binge drinkâ€”male or female college students? The Harvard School of Public Health surveys random samples of male and female undergraduates at four-year colleges and universities about whether they have engaged in binge drinking. What type of study design is being used to produce data?

asked 2021-06-04

You randomly survey shoppers at a supermarket about whether they use reusable bags. Of 60 male shoppers 15 use reusable bags. Of 110 female shoppers, 60 use reusable bags. Organize your results in a two-way table. Include the marginal frequencies.

asked 2021-09-18

Is \(\displaystyle{E}{\left({X}^{{2}}\right)}\) equal to \(\displaystyle{\left({E}{\left({X}\right)}\right)}^{{2}}\)?

asked 2021-09-14

A.C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the amount watched by a randomly selected child is normally distributed and the standard deviation is 3 hours. If 20 children between the ages of 2 and 5 are randomly selected, find the standard error of the average number of hours watched by them in the sample.